... life, reliability, etc 17-type forging coupler forge yoke introduction:Forging coupler yoke are upgrading product on the base of Casting ... Company, we successfully research,design, manufacture 17-type forging coupler yoke, and in 2006 we got the manufacture qualification license authorized ... by the Ministry of Railways.17-type forging coupler yoke is used for the 70-ton railway wagon, and ...